Each Android version has been named after a dessert: Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, and Jelly Bean. "As everybody finds it difficult to stay away from chocolate we decided to name the next version of Android after one of our favorite chocolate treats, Kitkat," Google said on the Kitkat web site.
Naturally, there is a partnership and a promo deal between Google and Nestle(technically made by Hershey in the U.S.), as confirmed by the Android team in a blog post on Tuesday.
"KitKat has been a favorite candy on the team for some time, so for the K release, we asked if they'd be willing to lend their iconic candy bar to its name. Be on the lookout for limited edition Android KitKat bars coming soon to a candy aisle near you. For a lucky few, your KitKat bar might contain a winning ticket for a new Nexus 7 tablet or Google Play credits."
Pichai also touted in a Google+ post on Tuesday that there have been more than one billion activations of Android-based devices worldwide.